[mikeSiLVO]

Let me describe the issue a bit more in detail:

1. Select all TV Shows with unwatched Episodes
2. Enter a Show
3. Enter a Season
4. Play an unwatched episode
5. Skip a bit forward to the end
6. When the threshhold for automatically mark as watch is reached stop playback 

Episode will show as watched in the list view. So far so good.

7. Go one level higher (you on the season level again)

The season will still have one e.g. one unwatched episode listed on the indicator, even though it was marked as watched. Same on Series level.

Only if I go up to main menu and re-enter again the watched status is correctly reflected.

It is like the view doesn't get updated when I go one level back up. I only have seen this with Aeon Nox on Krypton. Kodi bug? Well than many people would have reported it. I cannot find a bug report on this.

Also I cannot reproduce this with other skins. On Jarvis this problem never happened. Kodi bug, sure possible. 

Debug Logs show nothing. No errors, warnings or whatever logged. It behaves absolutely normal. Episode is as said properly marked as watched, and this is displayed as such inside the season, but going one level higher it is like I get some "cached" list displays that was not updated (invalidated so it is refreshed?)

If you have any more information to help me find the root cause, might it be skin or Kodi would be helpful as this is really annoying.

Tried your steps on my Krypton 17.5 test install and I have zero issues. I am not using MySQL though so that could be your problem.

Lets work through your comments one at a time:

Kodi bug? Well than many people would have reported it. I cannot find a bug report on this.

Using that same logic, this a popular skin used by many Kodi users. If it is a skin issue wouldn't it be just as possible to have been reported before now?

Also I cannot reproduce this with other skins.

What other skins and did you repeat the same exact steps? Perhaps you could provide a video of you performing these steps and switching skins to repeat?

Debug Logs show nothing. No errors, warnings or whatever logged.

This one I do not get. Do you or do you not know what the problem is? If you don't then how do you know what the debug log (wiki) is telling you isn't relevant?

It is like the view doesn't get updated when I go one level back up.

It behaves absolutely normal. Episode is as said properly marked as watched, and this is displayed as such inside the season, but going one level higher it is like I get some "cached" list displays that was not updated (invalidated so it is refreshed?)

There is no missing "code" to refresh the view. My guess is that you have an issue that may happen on your particular setup only.

Kodi runs on *checks notes*... everything and that could mean a million differences and/or reasons why something is happening to you and not me.